Wikipedia:Selected anniversaries/June 17
- 1462 – Ottoman–Hungarian wars: Wallachian forces led by Vlad Dracula (portrait shown) attacked an Ottoman camp at night in an attempt to assassinate Mehmed II.
- 1795 – French Revolutionary Wars: Off the coast of Brittany, a Royal Navy squadron commanded by William Cornwallis fended off a numerically superior French Navy fleet.
- 1940 – Second World War: RMS Lancastria was sunk by German aircraft near Saint-Nazaire, France, causing thousands of fatalities in Britain's worst maritime disaster.
- 1952 – Guatemalan Revolution: The Guatemalan Congress passed Decree 900, redistributing unused land greater than 224 acres (0.91 km2) in area to local peasants.